Zidane is the latest evidence of how coaching a Spanish super-club can be unbearable. First Pep Guardiola and Luis Enrique departed from Barcelona, needing rest, and now Zidane has left Real Madrid. The top echelons of…

Soccer is the most popular sport in the world with a reported 250 million players in over 200 countries and dependencies and an estimated 3.5 billion fans. This means that there is always a soccer match…